NANOPARTICLES DISPERSION IN PROCESSING NANOSTRUCTURE CHIRAL POLY(AMIDE-IMIDE)S BASED ON 7V-TRIMELLITYLIMIDO-Z,-LEUCINE/TiO2 NANOCOMPOSITES: ALLOCATION AND PROPERTIES

Journal of The Chilean Chemical Society

KHANI, MARZIYEH¹  MALLAKPOUR, SHADPOUR¹ 

[1] Isfahan University of Technology, Isfahan, Iran

关键词: Polymer nanocomposites;    Molten salt ionic liquid;    TiO2 nanoparticles;    Thermally stable poly (amide-;    imide);    Ultrasonic irradiation;   

DOI  :  10.4067/S0717-97072013000100022

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

Poly(amide-imide)s (PAI)s as engineering materials have received more attention owing to their high thermal and chemical stability. Therefore, organic/ inorganic nanocomposite (NC) of these materials has been widely studied in the last few decades. Here, we present PAI-NCs preparation containing surface modified TiO2 nanoparticles (NP)s by employing silane coupling agent under ultrasonic process. Optically active nanostructure PAI was prepared from 5-(2-benzimidazole)-1,3-phenylenediamine (4) and chiral diacid monomer N-trimellitylimido-L-leucine (5) using molten salt tetrabuthylammonium bromide as an activating medium. A considerable improvement of properties can be achieved by inserting NPs into the polymer matrix. The results of field emission scanning electron microscopy and transmission electron microscopy indicated that there is a little aggregation of a large quantity of particles. Thermogravimetric analysis confirmed that the heat stability of the polymer NCs in the temperature range of 400-800 °C was enhanced.

【 授权许可】

Unknown